Study Guides

Class 1 & 2 Pre-Test

Class 1 & 2 Study Guides include 2 pretests with answers, activated sludge general knowledge information, and Class 1 & 2 Math questions. These Study Guides are meant to help prepare operators for their Waste Water Treatment Operators Certification Exams.

Class 3 & 4 Pre-Test

Class 3 & 4 Study Guides include 2 pretests with answers, Class 3 size plants general knowledge information, and Class 3 & 4 Math questions. These Study Guides are meant to help prepare operators for their Waste Water Treatment Operators Certification Exams.

Math

Math seems to be the area of the operator certification exam every operator dreads. This section is meant to help the operator understand and better prepare for the type of questions on the certification exam.

Pumps

Pump Study Guides provide general information about pumps and pump maintenance. The information in this section is often seen on the Waste Water Treatment Operators Certification Exams.

Basic Nitrification Facts

Nitrification is the biological removal (oxidation) of ammonia (NH₄⁺) by certain bacteria in the presence of oxygen. This special group of bacteria is called “nitrifiers” or “nitrifying bacteria”, or “nitrification bacteria”.